1 // Copyright 2014 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
5 cr.define('settime', function() {
7 * TimeSetter handles a dialog to check and set system time. It can also
8 * include a timezone dropdown if timezoneId is provided.
10 * TimeSetter uses the system time to populate the controls initially and
11 * update them as the system time or timezone changes, and notifies Chrome
12 * when the user changes the time or timezone.
15 function TimeSetter() {}
17 cr.addSingletonGetter(TimeSetter);
19 /** @const */ var BODY_PADDING_PX = 20;
20 /** @const */ var LABEL_PADDING_PX = 5;
22 TimeSetter.prototype = {
24 * Performs initial setup.
26 initialize: function() {
27 // Store values for reverting inputs when the user's date/time is invalid.
28 this.prevValues_ = {};
30 // The build time doesn't include a timezone, so subtract 1 day to get a
32 this.minDate_ = new Date(loadTimeData.getValue('buildTime'));
33 this.minDate_.setDate(this.minDate_.getDate() - 1);
35 // Set the max date to the min date plus 20 years.
36 this.maxDate_ = new Date(this.minDate_);
37 this.maxDate_.setYear(this.minDate_.getFullYear() + 20);
39 // Make sure the ostensible date is within this range.
41 if (now > this.maxDate_)
43 else if (now < this.minDate_)
46 $('date').setAttribute('min', this.toHtmlValues_(this.minDate_).date);
47 $('date').setAttribute('max', this.toHtmlValues_(this.maxDate_).date);
51 // Show the timezone select if we have a timezone ID.
52 var currentTimezoneId = loadTimeData.getValue('currentTimezoneId');
53 if (currentTimezoneId) {
54 this.setTimezone_(currentTimezoneId);
55 $('timezone-select').addEventListener(
56 'change', this.onTimezoneChange_.bind(this), false);
57 $('timezone').hidden = false;
62 $('time').addEventListener('blur', this.onTimeBlur_.bind(this), false);
63 $('date').addEventListener('blur', this.onTimeBlur_.bind(this), false);
65 $('set-time').addEventListener(
66 'submit', this.onSubmit_.bind(this), false);
70 * Sets the current timezone.
71 * @param {string} timezoneId The timezone ID to select.
74 setTimezone_: function(timezoneId) {
75 $('timezone-select').value = timezoneId;
80 * Updates the date/time controls to the current local time.
81 * Called initially, then called again once a minute.
84 updateTime_: function() {
87 // Only update time controls if neither is focused.
88 if (document.activeElement.id != 'date' &&
89 document.activeElement.id != 'time') {
90 var htmlValues = this.toHtmlValues_(now);
91 this.prevValues_.date = $('date').value = htmlValues.date;
92 this.prevValues_.time = $('time').value = htmlValues.time;
95 window.clearTimeout(this.timeTimeout_);
97 // Start timer to update these inputs every minute.
98 var secondsRemaining = 60 - now.getSeconds();
99 this.timeTimeout_ = window.setTimeout(this.updateTime_.bind(this),
100 secondsRemaining * 1000);
104 * Sets the system time from the UI.
107 applyTime_: function() {
108 var date = $('date').valueAsDate;
109 date.setMilliseconds(date.getMilliseconds() + $('time').valueAsNumber);
111 // Add timezone offset to get real time.
112 date.setMinutes(date.getMinutes() + date.getTimezoneOffset());
114 var seconds = Math.floor(date / 1000);
115 chrome.send('setTimeInSeconds', [seconds]);
119 * Called when focus is lost on date/time controls.
120 * @param {Event} e The blur event.
123 onTimeBlur_: function(e) {
124 if (e.target.validity.valid && e.target.value) {
125 // Make this the new fallback time in case of future invalid input.
126 this.prevValues_[e.target.id] = e.target.value;
129 // Restore previous value.
130 e.target.value = this.prevValues_[e.target.id];
135 * @param {Event} e The change event.
138 onTimezoneChange_: function(e) {
139 chrome.send('setTimezone', [e.currentTarget.value]);
143 * Closes the dialog window.
144 * @param {Event} e The submit event.
147 onSubmit_: function(e) {
149 chrome.send('dialogClose');
153 * Resizes the window if necessary to show the entire contents.
156 sizeToFit_: function() {
157 // Because of l10n, we should check that the vertical content can fit
158 // within the window.
159 if (window.innerHeight < document.body.scrollHeight) {
160 // Resize window to fit scrollHeight and the title bar.
161 var newHeight = document.body.scrollHeight +
162 window.outerHeight - window.innerHeight;
163 window.resizeTo(window.outerWidth, newHeight);
168 * Builds date and time strings suitable for the values of HTML date and
170 * @param {Date} date The date object to represent.
171 * @return {{date: string, time: string}} Date is an RFC 3339 formatted date
172 * and time is an HH:MM formatted time.
175 toHtmlValues_: function(date) {
176 // Get the current time and subtract the timezone offset, so the
177 // JSON string is in local time.
178 var localDate = new Date(date);
179 localDate.setMinutes(date.getMinutes() - date.getTimezoneOffset());
180 return {date: localDate.toISOString().slice(0, 10),
181 time: localDate.toISOString().slice(11, 16)};
185 TimeSetter.setTimezone = function(timezoneId) {
186 TimeSetter.getInstance().setTimezone_(timezoneId);
189 TimeSetter.updateTime = function() {
190 TimeSetter.getInstance().updateTime_();
194 TimeSetter: TimeSetter
198 document.addEventListener('DOMContentLoaded', function() {
199 settime.TimeSetter.getInstance().initialize();